CBSE

MATHEMATICS · Single correct · CBSE · Mathematics · Binomial Theorem · Binomial Theorem

Problem

\left(\sum_{r=0}^{0}{}^{0}C_r\right)\left(\sum_{r=0}^{0}(-1)^r\frac{{}^{0}C_r}{2^r}\right)

is equal to (1)

1

(2)

2^5

(3)

2^{10}

(4)

2^{20}